Question

In January, Desmond begins saving $25 per month for a used car. Each month, he is able to save $5 more than the previous month. After how many months will Desmond first have enough money to purchase a $3,000 used car?

Answer 1

Answer:

31 months

Step-by-step explanation:

The savings of each month is as follows

25,30,35,40 ....

This is an AP with a=25 , d=5

and the sum=3000 Thus

3000=$\frac{n}{2}$(2a+(n-1)d)

6000=n(50+(n-1)5)

we can try diffrent values, when we add n=31

then we get 6200 i.e close to 6000 Thus we dont get a perfect answer so we go for the closet we can get

thus we go for 31

Answer 2

Answer:

31 months

Step-by-step explanation:

just took the quiz 100%